Carriage for rock-drills



(No Model.)

W. L. SAUNDERS.

CARRIAGE FOR ROCK DRIL'LS.

,625. Patented May 18, 1884.

E? ii INVENTOR VVIJZZZ Q/M L,Saun0lers.

-BZ/ Z/s flttorneys N. PETERS, Pholoiiklwgmphen Washingknn, an.

illnurno 'd'rarns Parent Osman,

XVILLIAM L. SAUNDERS, OF JERSEY CITY, NEXV JERSEY.

CARRHAGE FOR ROCK DRILLS.

SPECIFICATION forming part of Letters Patent No. 298,625, dated May 13,188%.

Application filed December 28, 1883. (No model.)

To aZZ whom it may concern.-

Be it known that I,WILLIA1\I L. SAUNDERS, citizen of the United States,residing in Jersey City, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements in Carriagesfor Rock- Drills,of which the following is a specification.

My invention relates particularly to the class of machinery employed instone'quarrying, where it is desired to drill horizontal holes into'theface of the bench on a true line and in the same plane with the naturalstratification of the stone.

The objects of my invention are, first, to provide a standard or postwhich shall serve as a carriage for a direct-acting or percussionrock-drill, and which shall be of such sectional form as to resist thevibratory thrust of the drill while operating transverse- 1y, saidstandard to be fixed at one end to a suitable platform, and adjustablethereto in a vertical plane from a perpendicular position to a nearlyhorizontal one; second, to provide an improved form of saddle to whichthe rock-drill is fixed, said saddle to be movable longitudinally uponthe standard, and provided with a device for rapidly and rigidly fixingand releasing it therefrom. I attain these objects by the mechanismillustrated in the accompanying drawings, in which Figure l is aperspective view of the entire machine. Fig. 2 is an elevation of thesaddle, partly in section, and illustrates my design for fixing andreleasing the saddle to the standard. Fig. 3 is a cross-section throughthe line X X of Fig. 1, and. illustrates the curved form of the standardfor insuring rigidity.

A represents the rock-drill. B is the sadple, to which is fixed thedrill A. This saddle is made to travel longitudinally along the standard0, which may be conveniently done by having its under surface planed tofit the guides or track d d of the standard 0, and raising by means of achain, 1', attached to the saddle and passing upward over the pulley 17,returning from thence downward and around the crank it. The standard (3is hinged at its lower end to the platform or car D, through thetrunnions S S. At a point, j, 011 the standard G is hinged the longscrew E, which passes downward through the hub of the hand-wheel c andthrough the yoke F, which is fixed to the car D by the hinge-bolts 0.The car is mounted on wheels, andprovided with corner-pins f, which, 011being driven into the floor and set by the screws h, serve to hold thecarriage in place. is cut in the hub of the hand-wheel e, correspondingwith that of the back screw,E. This hub has a bearing within the yoke F,and hence on turning the hand-wheel c the standard O is raised orlowered, and thus may be placed at any desired angle. On the under side,and running the entire length. of the saddle, is placed a gib, m. Thisgib is tapered on one of its surfaces, and corresponds to a taper orincline cut on the surface of the saddle. On one side of the gib teethare out, which are made to gear with a pinion-arm, n, which is fixed tothe saddle by the swivelbolt 0. The teeth onthe pinion-arm a are cut ona segment of a circle described from b. On raising the pinion-arm n tothe position as shown in Fig. 2, the gib m is thrown downward, and thusthe saddle is released. On reversing the arm,the gib is thrust upwardand the saddle is fixed to the standard.

Iam aware that rock-drills have heretofore been mounted on vertical andhorizontal bars and made to traverse the same longitudinally.

I am also aware that various forms of carriages for rock-drills havebeen in use in which frames for supporting the drills have been mountedon bars pivoted to blocks sliding in ways in frames hung upon wheels;but

WVhat I claim as new and of my invention 1sa 1. The combination of therock-drill A, saddle 13, supporting said drill, and standard 0, carryingsaid saddle, with means for raising and lowering said saddle and drillupon the standard, and the gib m and pinion-arm n for locking the saddlein place, substantially as and for the purposes set forth.

2. The combination of the standard C,

A thread l having the longitudinal guides d, with the In testimonywhereof I have hereunto subsaddle B, having the drill A fixed thereto,scribed my name this 18th day of December, the screw E, hand-wheel e,and yoke F for A. D. 1883.

adjusting the standard 0, and the gib m WILLIAM L. SAUNDERS. andpinion-arm n for locking the saddle in Witnesses:

place, substantially as and for the purposes DANL. W. EDGECOMB,

set forth. CHARLES A. TERRY.

